Drying for Moisture Analysis

The NEW FBD 2000 is a compact, portable dryer. Its powerful air delivery system makes drying a very fast operation. The fluidization mixes and separates the particles, minimizing the risk of abrasion and the creation of lumps, and resulting in a truly representative sample. The comprehensive set of controls makes it ideal for use in the laboratory on a wide selection of materials.


Drying times range from a few seconds to minutes.

Higher rates of heat transfer ensure faster and more homogeneous drying than oven, microwave, or vacuum drying.

Suitable for most granular and powder materials.

Precise controls ensure uniform and reproducible results.

Manageable controls with straightforward settings.

Product Specs

Air is heated by a 2kW electric heater and can be set to any temperature up to 200ºC. The temperature is controlled by a closed loop system that can achieve stability to within 1ºC.

A built-in digital timer enables the drying time to be pre-set and the drying operation to be carried out unattended. At the end of the cycle time an alarm sounds and the unit switches off automatically.

The air flow rate and fluidization velocity are infinitely variable from 0.4 to 2.4m³/min volume (0.9 to 5 m/sec speed). Optimum levels can be set by observing the sample behavior within the glass tubs.

Filter bags are usually nylon or terylene with other materials available to suit more aggressive conditions such as sustained high temperature drying.

FBD Specs   FBD Specs

Max. Sample Weight: 5kg
Voltage Rating: 110v or 240v 50Hz or 60Hz
Power Consumption: 2.6kW
Dimensions: 260 x 320 x 505mm (H x W x D)
Weight: 19kg

FBD Specs   FBD Specs

The FBD 2000 offers significant advantages over conventional drying techniques.

  • High air flow rates provide high rates of heat transfer and ensure much faster and more homogeneous drying than other methods such as oven, microwave and vacuum drying.
  • Drying times range from a few seconds to minutes. Complete drying is usually achieved in under 15 minutes.
  • High air flow thoroughly mixes and separates the particles minimizing the risk of abrasion and the formation of lumps.
  • Drying is achieved at lower temperatures and without hot spots.
  • Settings are accurately repeatable and provide uniform and reproducible results.
  • Materials with a moisture content of up to 80% may be dried.

How the FBD 2000 Operates

A power fan delivers the high volume air flow from the base unit into a special tub assembly which holds the sample material.

The flow of heated air passes through a diffuser gauze which supports the bed and evenly distributes the air as it passes into the tub.

A filter bag at the top of the tub keeps the sample in while allowing the air, moisture and gases to escape.


Single tubs come in 2 and 5 liter sizes in either stainless steel or glass (see below). A multi-tub is also available for drying four samples at one time. Glass tubs are particularly useful for observing the fluidization process to establish optimum settings.

Fluid Bed Dryer Tubs

An attachment is also available for the efficient drying of test sieves (see right).

Dryer with attachment
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